文献类型：专利

英文题名：Method for reutilization of residue from crude terephthalic acid product

作者：HE M;GAO J;WANG P

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN1521158-A

申请日：2003-01-30

公开日：2004-08-18

语种：英文

收录：DERWENT

摘要：NOVELTY - The present invention is the method of recovering and using coarse terephthalic acid (CTA) residue and the method includes adding fatty acid, dihydric alcohol and catalyst in catalytic amount to catalytically esterify to produce mixed coarse ester, with the molar ratio among residue, fatty acid and dihydric alcohol being 1.0 to 0.2-9.0 to 0.8-5.0. The present invention has the advantages of one-step esterification of CTA residue to obtain mixed ester, short technological process, saving in energy source and low cost, and the outstanding advantage is the comprehensive utilization of CTA residue as industrial resource.